iGigBook for the iPad has a full featured metronome available whenever you view a PDF page. Metronome settings can be saved for the current page that you are viewing by pressing the icon at the top right of the metronome. You can remove the settings for a page by pressing the icon at the top left of the metronome.

The metronome is disabled by default, to use the Metronome you must enable it by using the Settings App.

Beats - Select the number of beats per measure by tapping the -/+ buttons or enter the number of beats. 4 beats per measure = 4/4, 3 beat per measure = 3/4, etc. The down beat has a different tone than other beats.

Number of Bars - Select the number of bars for the metronome to beat before stopping by tapping the -/+ buttons or enter the number of bars. You can use this option to create a "count off" or "lead in" to set the tempo prior to playing. You can also use this option along with Next Page to trigger a page turn after the number of bars has been reached.